Python 嵌套序列化程序不会序列化第二个序列化程序
我想使用嵌套序列化程序。我跟踪了医生 我使用的是Django REST 3.5.3和Django 1.9.12 这是我的Python 嵌套序列化程序不会序列化第二个序列化程序,python,django,serialization,django-rest-framework,Python,Django,Serialization,Django Rest Framework,我想使用嵌套序列化程序。我跟踪了医生 我使用的是Django REST 3.5.3和Django 1.9.12 这是我的模型和序列化程序 型号 class Budget(AbstractModelController): CANCELED = -1 CREATED = 0 QUOTATION = 1 INVOICED = 2 PART_PAID = 3 COMPLETED = 4 STATUS_CHOICES = ( (C
模型
和序列化程序
型号
class Budget(AbstractModelController):
CANCELED = -1
CREATED = 0
QUOTATION = 1
INVOICED = 2
PART_PAID = 3
COMPLETED = 4
STATUS_CHOICES = (
(CANCELED, _("Canceled")),
(CREATED, _("Created")),
(QUOTATION, _("Quotation")),
(INVOICED, _("Invoiced")),
(PART_PAID, _("Part Paid")),
(COMPLETED, _("Completed"))
)
project = models.ForeignKey(Project, related_name="budgets", verbose_name=_("Project"))
status = models.IntegerField(choices=STATUS_CHOICES, default=CREATED, verbose_name=_("Status"))
name = models.CharField(max_length=200, verbose_name=_("Name"))
value = models.DecimalField(max_digits=10, decimal_places=2, verbose_name=_("Value"))
start_date = models.DateTimeField(verbose_name=_("Start date"))
end_date = models.DateTimeField(verbose_name=_("End date"))
class Meta:
ordering = ("-id", )
def __str__(self):
return "{}: {}".format(self.project.name, self.name)
def get_absolute_url(self):
return reverse_lazy("budget:detail", kwargs={"pk": self.id})
class Payment(AbstractModelController):
class PaymentState(DjangoChoices):
Paid = ChoiceItem("P")
Unpaid = ChoiceItem("U")
budget = models.ForeignKey(Budget, null=True, blank=True)
description = models.CharField(max_length=255)
ratio = models.SmallIntegerField(validators=[validate_boundary], verbose_name="Ratio(%)")
state = models.CharField(max_length=1, choices=PaymentState.choices, validators=[PaymentState.validator])
序列化程序
:
class BudgetSerializer(serializers.ModelSerializer):
project = ProjectSerializer()
payments = PaymentSerializer(many=True, read_only=True)
class Meta:
model = Budget
exclude = EXCLUDE_MODEL_CONTROLLER_FIELDS
class PaymentSerializer(ModelControllerSerializerMixin):
class Meta:
model = Payment
fields = [
"budget",
"description",
"ratio",
"state",
]
在付款
表中。它有多条记录,请参考budget\u id=1
{
"budget": 1,
"description": "First round",
"ratio": 30,
"state": "P"
},
{
"budget": 1,
"description": "Second round",
"ratio": 30,
"state": "U"
},
{
"budget": 1,
"description": "Final round",
"ratio": 40,
"state": "U"
},
{
"budget": 1,
"description": "Final round",
"ratio": 40,
"state": "U"
}
下面是预算序列化程序的输出。它不包含嵌套的序列化数据
{
"id": 1,
"project": {
"id": 1,
"company": {
"id": 1,
"name": "Sarit Enterprise",
"phone_number": "0841021711",
"email": "cs.sarit@gmail.com",
"address": "bkk@bkk",
"tax_id": "67890",
"organization": 1
},
"name": "Project"
},
"status": 0,
"name": "Budget",
"value": 0.0,
"start_date": "2016-05-17T17:00:00Z",
"end_date": "2016-06-29T17:00:00Z"
}
我遗漏了这一点吗?我遗漏了相关的名称
class Payment(AbstractModelController):
class PaymentState(DjangoChoices):
Paid = ChoiceItem("P")
Unpaid = ChoiceItem("U")
budget = models.ForeignKey(Budget, related_name='payments', null=True, blank=True)
description = models.CharField(max_length=255)
ratio = models.SmallIntegerField(validators=[validate_boundary], verbose_name="Ratio(%)")
state = models.CharField(max_length=1, choices=PaymentState.choices, validators=[PaymentState.validator])
如果您查看以下文件: 请注意,
ModelSerializer
和HyperlinkedModelSerializer
类不会自动包含反向关系。要包含反向关系,必须将其显式添加到字段列表中
通常,您需要确保在关系上设置了一个适当的related\u name
参数,可以将其用作字段名
如果尚未为反向关系设置相关名称
,则需要在fields参数中使用自动生成的相关名称
考虑到第二点,您需要在支付模型的预算字段中添加相关的\u名称
:
budget = models.ForeignKey(Budget, null=True, blank=True, related_name='payments')
多谢各位<代码>反向关系对我来说是一门新知识。